The fluidic memristor as a collective phenomenon in elastohydrodynamic networks

Alejandro Martínez-Calvo, Matthew D. Biviano, Anneline H. Christensen, Eleni Katifori, Kaare H. Jensen and Miguel Ruiz-García ()
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Alejandro Martínez-Calvo: Princeton University
Matthew D. Biviano: Technical University of Denmark
Anneline H. Christensen: Technical University of Denmark
Eleni Katifori: University of Pennsylvania
Kaare H. Jensen: Technical University of Denmark
Miguel Ruiz-García: Universidad Complutense Madrid

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract Fluid flow networks are ubiquitous and can be found in a broad range of contexts, from human-made systems such as water supply networks to living systems like animal and plant vasculature. In many cases, the elements forming these networks exhibit a highly non-linear pressure-flow relationship. Although we understand how these elements work individually, their collective behavior remains poorly understood. In this work, we combine experiments, theory, and numerical simulations to understand the main mechanisms underlying the collective behavior of soft flow networks with elements that exhibit negative differential resistance. Strikingly, our theoretical analysis and experiments reveal that a minimal network of nonlinear resistors, which we have termed a ‘fluidic memristor’, displays history-dependent resistance. This new class of element can be understood as a collection of hysteresis loops that allows this fluidic system to store information, and it can be directly used as a tunable resistor in fluidic setups. Our results provide insights that can inform other applications of fluid flow networks in soft materials science, biomedical settings, and soft robotics, and may also motivate new understanding of the flow networks involved in animal and plant physiology.

Date: 2024
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DOI: 10.1038/s41467-024-47110-0

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